package org.appenders.log4j2.elasticsearch.util;

/*-
 * #%L
 * log4j2-elasticsearch
 * %%
 * Copyright (C) 2020 Rafal Foltynski
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class SplitUtil {

    private SplitUtil() {
        // static util
    }

    public static List<String> split(String input) {
        return split(input, ";");
    }

    public static List<String> split(String input, String separator) {

        if (input == null) {
            return Collections.emptyList();
        }

        if (input.trim().isEmpty()) {
            return Collections.emptyList();
        }

        if (!input.contains(separator)) {
            return Collections.singletonList(input);
        }

        return Arrays.stream(input.split(separator))
                .filter(result -> !result.trim().isEmpty())
                .collect(Collectors.toList());
    }

}
